Maybe not Postman but at least you don't need an account: https://rest.secapps.com/ - https://httpview.secapps.com/ - #disclosure I am the author and we are making some substantial changes to make our tools available without registration

What I would love would be a git friendly app. keep the collection as a file that I can keep on the repo and them commit the new changes in the code.

Paw uses git under the hood when you use its sync service (available for free), it seems.

Unfortunately, you can't sync with your own repo, which is a shame for a fairly expensive rest client, compared to alternatives.

I use and love it way more than Postman nevertheless.

We use libgit2 server side, Paw does not talk GIT it talks json to our syncing service. (the repo format we have would not be very nice if you wanted to embed it in another project, since we split out each object in Paw into a separate yaml file to reduce merge conflicts, this means even small projects in Paw can be 1000s of files) During merges etc we run extra validation on the project to ensure we dont get corruption. (this is not easily possible with repos hosted on github etc) (paw backend dev here)